Period small (about the size of a coffee mug) 0,25L bier krug. The graphics are for Hackerbräu München Nährbier which is advertised here as a nourishing, healthy beer with a low alcohol content. We have found a few krugs of this design and many have had pre-war markings although there is nothing to date this specific krug, I believe it is also pre-war. It is in pretty good condition with light wear. The graphics have some fading. It measures about 3 3/4" tall.
This is a krug, not a stein. Stein is what English speakers and tourists say. In German a stein is a stone, and is not used to describe a beverage container.